THE LAMELLICORNES, OR " CHAFERS." 115 



anterior part of the elytra ; the clypeus has no projection 

 in front, and the prosternum no elongation behind the 

 coxae ; the elytra, also, are lined with membrane, which 

 projects behind in the form of a thin rim. 



Phyllopertha horticola, the small " June-bug " (Plate 

 VIIT, Fig. 1), is often very destructive to plants. 



The MELOLONTHID.E have the outer lobe of the 

 maxillae strongly toothed; the mandibles robust, with 

 no inner membraneous border ; the labrum very promi- 

 nent, and deeply notched ; the anterior coxae transverse ; 

 the scutellum rounded; the body cylindrical, and the 

 ventral segments of the abdomen soldered together, with 

 the points of junction effaced in the middle. 



In Melolontha (the common "cockchafer") the ab- 

 domen is produced behind into a strong point (this 

 structure being, however, not constant in the genus) ; 

 and the club of the antennae is composed of seven joints 

 in the male, and six in the female. The habits of this 

 species and its larvae are, unfortunately, too well known. 

 The smaller Rhizotrogns solstitialis (belonging to the 

 section of the genus which has but nine joints to its 

 antennae, for which Latreille founded the now abandoned 

 genus Amphimallus) , the "summer-chafer," has a three- 

 jointed club : it is conspicuous for the long hairs in the 

 front of its body, and for its habit of wheeling in flight 

 towards evening round any solitary tree. 



The SERICID^: have the labrum entirely confused 

 with the clypeus ; the outer lobe of the maxillae toothed ; 

 the scutellum triangular ; the posterior coxae very large 

 and much widened outwards ; the metasternum obliquely 

 truncated on each side behind; the segments of the ab- 

 domen not soldered together; and the tarsi long and 

 slender. 



